CN111430889B - Terminal antenna and terminal - Google Patents
Terminal antenna and terminal Download PDFInfo
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- CN111430889B CN111430889B CN201910024267.7A CN201910024267A CN111430889B CN 111430889 B CN111430889 B CN 111430889B CN 201910024267 A CN201910024267 A CN 201910024267A CN 111430889 B CN111430889 B CN 111430889B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The terminal antenna comprises N antennas, wherein each antenna is symmetrically arranged on two second dielectric substrates of the terminal, and the two second dielectric substrates are respectively arranged on two opposite side edges of a first dielectric substrate and are mutually perpendicular to the first dielectric substrate; each antenna group is axisymmetric based on the central axis of the first dielectric substrate in the transverse and longitudinal directions; decoupling units are arranged among the antennas arranged on the same second dielectric substrate; one end of the antenna is connected with the feed point, and the other end of the antenna is connected with the floor arranged at the bottom of the first dielectric substrate of the terminal. Therefore, through the arrangement of a plurality of antennas, the strength of the antennas is ensured, decoupling units arranged between the antennas ensure the isolation between the antennas, and the use experience of the antennas is improved.
Description
Technical Field
Embodiments of the present invention relate to, but are not limited to, the field of communications, and in particular, but not limited to, a terminal antenna and a terminal.
Background
Currently, hand-held terminals are being miniaturized and are being wearable, so that space left for antenna designs, which is inherently inadequate, is becoming more intense. Meanwhile, in the MIMULTIPLE-Input Multiple-Output antenna array, due to the limitation of the use space, the space between the antenna elements is closer along with the increase of the number of the antenna elements. Too close a cell spacing causes strong surface wave coupling and spatial inductive coupling between antennas, thereby degrading the performance of the MIMO array, such as frequency band, efficiency, etc. Therefore, it is necessary to take reasonable and effective decoupling measures to ensure the overall performance of the antenna array. The antenna strip design in the related art has poor antenna isolation or weak antenna strength, and cannot meet the increasing communication demands.
Disclosure of Invention
The terminal antenna and the terminal provided by the embodiment of the invention mainly solve the technical problem that the arrangement of the terminal antenna in the related art is difficult to ensure better strength and isolation.
In order to solve the technical problems, the embodiment of the invention provides a terminal antenna, which comprises N antennas, wherein each antenna is symmetrically arranged on two second dielectric substrates of a terminal, and the two second dielectric substrates are respectively arranged on two opposite side edges of a first dielectric substrate and are mutually perpendicular to the first dielectric substrate; each antenna group is axisymmetric based on the central axis of the first dielectric substrate in the transverse and longitudinal directions; decoupling units are arranged among the antennas arranged on the same second dielectric substrate; one end of the antenna is connected with the feed point, and the other end of the antenna is connected with the floor arranged at the bottom of the first dielectric substrate of the terminal.
The embodiment of the invention also provides a terminal, which comprises a terminal body and the terminal antenna, wherein the terminal body at least comprises the first dielectric substrate, the second dielectric substrate, the feed point and the floor.
The beneficial effects of the invention are as follows:
according to the terminal antenna and the terminal provided by the embodiment of the invention, the terminal antenna comprises N antennas, each antenna is symmetrically arranged on two second dielectric substrates of the terminal, and the two second dielectric substrates are respectively arranged on two opposite side edges of the first dielectric substrate and are mutually perpendicular to the first dielectric substrate; each antenna group is axisymmetric based on the central axis of the first dielectric substrate in the transverse and longitudinal directions; decoupling units are arranged among the antennas arranged on the same second dielectric substrate; one end of the antenna is connected with the feed point, and the other end of the antenna is connected with the floor arranged at the bottom of the first dielectric substrate of the terminal. Therefore, through the arrangement of a plurality of antennas, the strength of the antennas is ensured, decoupling units arranged between the antennas ensure the isolation between the antennas, and the use experience of the antennas is improved.
Additional features and corresponding advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic diagram of a structure of a terminal antenna according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of an antenna unit structure according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of a decoupling unit according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the embodiments of the present invention is given with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Embodiment one:
referring to fig. 1, the terminal antenna 5 includes N antennas 5, where each antenna 5 is symmetrically disposed on two second dielectric substrates 2 of the terminal, and the two second dielectric substrates 2 are respectively disposed on two opposite sides of the first dielectric substrate 1 and are perpendicular to the first dielectric substrate 1; each antenna 5 is respectively and axially symmetric based on the central axis of the first dielectric substrate 1 in the transverse and longitudinal directions; in each of the antennas 5, a decoupling unit is disposed between the antennas 5 disposed on the same second dielectric substrate 2; one end of the antenna 5 is connected with the feed point 4, and the other end is connected with the floor 3 arranged at the bottom of the first dielectric substrate 1 of the terminal.
The terminal antenna in this embodiment refers to an antenna module applied to various mobile terminals, such as a mobile phone, a tablet computer, etc., and may be all antenna modules in the terminal, or may be part of antenna modules in the terminal, in other words, the terminal antenna may be a component of an antenna in the terminal, and other antenna modules may be further disposed at other positions on the terminal, which is not limited in this embodiment.
One end of each antenna in the terminal antenna is connected with a feed point 4 provided by the terminal, the other end of each antenna is grounded, and the part between the two ends is the antenna body. The feeding point 4 may be realized by providing a through hole in the bottom of the floor 3 and the first dielectric substrate 1 and then accessing the feeding.
In some embodiments, the second dielectric substrate 2 is disposed on two opposite long sides of the first dielectric substrate 1. The long side of the first dielectric substrate 1 has a larger space, so that a sufficient space can be left when the antenna 5 is placed. The second dielectric substrate 2 is disposed on two opposite long sides of the first dielectric substrate 1, so that the space for disposing the second dielectric substrate 2 is also larger. Of course, it may also be provided on two opposite short sides of the first dielectric substrate 1.
In some embodiments, the N antennas 5 include 4 identical monopole antennas 5, and of the two monopole antennas 5 located on the same second dielectric substrate 2, the end connected to the feeding point 4 is located at the distal ends of the two monopole antennas 5.
In some embodiments, the radiating portion of the monopole antenna 5 is disposed on both the first dielectric substrate 1 and the second dielectric substrate 2. By arranging the radiating portions of the antenna 5 on both the first dielectric substrate 1 and the second dielectric substrate 2, the actual length of the antenna 5 can be increased as much as possible in a limited space, thereby making it possible to increase the signal quality.
In some embodiments, the radiating portion of the monopole antenna 5 is printed directly on the first dielectric substrate 1 and the second dielectric substrate 2.
In some embodiments, the radiating portion and the feeding portion of the monopole antenna 5 are integrally formed.
In some embodiments, the decoupling unit is closely adjacent to the antenna 5 on both sides, and the antenna 5 couples the decoupling unit to generate an induced current, so as to introduce a low-frequency resonance point. The decoupling units are arranged, so that the isolation between the two antenna 5 units is greater than 14.5dB, meanwhile, as the antenna 5 units adjacent to the two sides of the decoupling units are coupled to generate induced current to the decoupling units, resonance points are introduced at low frequency, resonance of a low frequency band (2.39-2.72 GHz) is realized, double-frequency operation is realized, and the isolation in the low frequency band is greater than 14dB.
In some embodiments, the decoupling unit comprises a metal patch positioned on the upper surface of the first dielectric substrate 1, and two bent metal strips connected with the metal patch and axisymmetric based on the center of the metal patch; the metal patch is connected with the floor 3; each bent metal strip extends from the middle of the metal patch to the adjacent antenna 5 and extends back to the middle of the metal patch to connect with the floor 3.
In some embodiments, the portions of the bent metal strips, each of which is adjacent to an adjacent antenna 5, are located on the lower surface of the first dielectric substrate 1.
The embodiment provides a terminal antenna, which comprises N antennas, wherein each antenna is symmetrically arranged on two second dielectric substrates of a terminal, and the two second dielectric substrates are respectively arranged on two opposite sides of a first dielectric substrate and are mutually perpendicular to the first dielectric substrate; each antenna group is axisymmetric based on the central axis of the first dielectric substrate in the transverse and longitudinal directions; decoupling units are arranged among the antennas arranged on the same second dielectric substrate; one end of the antenna is connected with the feed point, and the other end of the antenna is connected with a floor arranged at the bottom of the first dielectric substrate of the terminal. Therefore, through the arrangement of a plurality of antennas, the strength of the antennas is ensured, decoupling units arranged between the antennas ensure the isolation between the antennas, and the use experience of the antennas is improved.
Example two
The present embodiment provides a terminal antenna, please refer to fig. 1-3, and the present embodiment 1 provides a dual-frequency MIMO antenna suitable for a 5G terminal. Specifically, in the MIMO antenna unit adopting the coaxial feeding manner in this embodiment, the size of the MIMO antenna unit of the folded monopole is smaller, the distance between the antenna units is reduced, meanwhile, a decoupling structure is loaded between the MIMO antenna units, so as to achieve the effect of improving the isolation of the antenna, and the decoupling structure introduces a resonance point at a low frequency, so that the antenna realizes dual-frequency operation, and the overall structure diagram of the antenna is shown in fig. 1. The size of the first dielectric substrate 1 is 124mm multiplied by 74mm multiplied by 0.8mm, the second dielectric substrate 2 is positioned on the side edge of the first dielectric substrate 1, the two long sides of the first dielectric substrate 1 are respectively arranged, the long sides of the second dielectric substrate 2 are connected with the long sides of the first dielectric substrate 1, the two long sides are in vertical relation, the size of the metal floor 3 of the lower surface of the first dielectric substrate 1 is 124mm multiplied by 6mm multiplied by 0.8mm, the size of the metal floor 3 of the lower surface of the first dielectric substrate 1 is 124mm multiplied by 66mm, the feeding point 4 is connected with the antenna unit 5 through a coaxial inner core with the radius of 0.6mm, and the decoupling structure 6 is printed on the second dielectric substrate 2.
In order to reduce the space occupied by the antenna unit on the first dielectric substrate 1, the folded monopole antenna is adopted as the MIMO antenna unit, the isolation between the units is indirectly reduced by reducing the size of the unit, 3.29 GHz-3.62 GHz can be covered under the condition that the self-reflection coefficient Sii < -6dB, and the absolute bandwidth can reach 330MHz. The minimum reflection coefficient of the external four units in the working frequency band is-8.1 dB, the minimum reflection coefficient of the four units in the working frequency band reaches more than-11.1 dB, and the matching performance of the antenna units is good.
As shown in fig. 2, the antenna unit 5 is a structure diagram of an MIMO antenna suitable for a terminal, the antenna unit 5 is formed by connecting a first meandering metal strip 51 printed on the upper surface of a first dielectric substrate and a second meandering metal strip 52 and a metal strip 53 on the inner side wall of a second dielectric substrate 2, and the first meandering metal strip 51 is formed by splicing three metal patches with dimensions of 0.5mm x1.5mm,0.5mm x1.6mm and 0.5mm x1mm respectively; the second meandering metallic strip 52 is formed by splicing five metallic patches of dimensions 0.5mm x3mm,0.4mm x2.5mm,0.5mm x3mm,0.2mm x0.7mm,0.8mm x5.2mm, respectively, the metallic patches 53 being rectangular metallic patches of dimensions 1.2mm x3.3mm. The antenna unit has compact structure and smaller size, and is suitable for the design of the mobile terminal antenna.
As shown in fig. 3, which is a structural diagram of a decoupling structure 6 of a MIMO antenna suitable for a terminal, the decoupling unit 6 is composed of a second metal patch 61 and three meandering metal wires, the second metal patch 61 is connected with a metal floor 3 located on the lower surface of the first dielectric substrate 1 through two third meandering metal wires 62 and one fourth meandering metal wire 63, and the second metal patch 61 is a rectangular metal patch with a size of 31mmx1mm; the third meandering metal wire 62 is formed by splicing seven metal patches having dimensions of 2.8mm x0.3mm,0.8mm x0.3mm,15.4mm x0.3mm,1.5mm x0.5mm,15.4mm x0.3mm,2.36mm x0.3mm, respectively; the fourth meandering metal wire 63 is formed by splicing three metal patches having dimensions of 2.8mm x0.3mm,0.8mm x0.3mm,4mm x0.3mm, respectively, and the decoupling unit 6 can effectively suppress coupling between adjacent ports.
The dimensions of the various structures according to this embodiment are all an implementation manner, and are not necessarily such in the practical implementation process, and those skilled in the art may set corresponding dimensions in the face of different terminal dimensions and different signal strength requirements, which are not described herein.
The embodiment also provides a terminal, which comprises a terminal body and the terminal antenna in each embodiment, wherein the terminal body at least comprises a first dielectric substrate, a second dielectric substrate, a feed point and a floor.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the apparatus disclosed above may be implemented as software, implemented in computer program code executable by a computing apparatus, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed cooperatively by several physical components. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and may include any information delivery media. Therefore, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a further detailed description of embodiments of the invention in connection with the specific embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (8)
1. A terminal antenna comprises N antennas, wherein each antenna is symmetrically arranged on two second dielectric substrates of a terminal, and the two second dielectric substrates are respectively arranged on two opposite side edges of a first dielectric substrate and are mutually perpendicular to the first dielectric substrate; each antenna group is axisymmetric based on the central axis of the first dielectric substrate in the transverse and longitudinal directions; in each antenna, a decoupling unit is arranged between the antennas arranged on the same second dielectric substrate, two sides of the decoupling unit are adjacent to the antennas, the antennas couple the decoupling units to generate induced currents, low-frequency resonance points are introduced, and the frequency bands of the low-frequency resonance points are different from the working frequency bands of the antennas; one end of the antenna is connected with a feed point, and the other end of the antenna is connected with a floor arranged at the bottom of the first dielectric substrate of the terminal; the radiation part of the antenna is at least arranged on the first dielectric substrate and the second dielectric substrate at the same time.
2. The terminal antenna of claim 1, wherein the second dielectric substrate is disposed on two opposite long sides of the first dielectric substrate.
3. The terminal antenna according to claim 2, wherein the N antennas include 4 identical antennas, and among two antennas on the same second dielectric substrate, an end connected to a feeding point is located at distal ends of the two antennas.
4. The terminal antenna of claim 1, wherein the radiating portion of the antenna is printed directly on the first dielectric substrate and the second dielectric substrate.
5. The terminal antenna of claim 4, wherein the radiating portion and the feeding portion of the antenna are integrally formed.
6. A terminal antenna according to any one of claims 1-5, wherein the decoupling unit comprises a metal patch on the upper surface of the first dielectric substrate, and two bent metal strips connected to the metal patch and axisymmetric based on the center of the metal patch; the metal patch is connected with the floor; each bending metal strip extends from the middle of the metal patch to the adjacent antenna and extends back to the middle of the metal patch to be connected with the floor.
7. The terminal antenna of claim 6, wherein each of the bent metal strips is located at a lower surface of the first dielectric substrate near a portion of an adjacent antenna.
8. A terminal comprising a terminal body and a terminal antenna according to any of claims 1-7, the terminal body comprising at least the first dielectric substrate, the second dielectric substrate, the feed point and the floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910024267.7A CN111430889B (en) | 2019-01-10 | 2019-01-10 | Terminal antenna and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910024267.7A CN111430889B (en) | 2019-01-10 | 2019-01-10 | Terminal antenna and terminal |
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| Publication Number | Publication Date |
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| CN111430889A CN111430889A (en) | 2020-07-17 |
| CN111430889B true CN111430889B (en) | 2023-06-16 |
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| CN201910024267.7A Active CN111430889B (en) | 2019-01-10 | 2019-01-10 | Terminal antenna and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112635983B (en) * | 2020-12-11 | 2022-03-29 | 西安电子科技大学 | Dual-band eight-port MIMO terminal antenna based on radiator multiplexing technology |
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| WO2004064196A1 (en) * | 2003-01-15 | 2004-07-29 | Fdk Corporation | Antenna |
| CN102394348A (en) * | 2011-07-08 | 2012-03-28 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency-range cell phone MIMO (Multiple Input Multiple Output) antenna structure applicable to LTE (Long Term Evolution) standard |
| CN102983397A (en) * | 2012-11-30 | 2013-03-20 | 华南理工大学 | Small high-isolation double-notch UWB MIMO antenna |
| CN104022353A (en) * | 2014-06-12 | 2014-09-03 | 电子科技大学 | Multi-band MIMO antenna used for intelligent machine |
| CN104112911A (en) * | 2013-04-18 | 2014-10-22 | 财团法人工业技术研究院 | Multi-antenna system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9531084B2 (en) * | 2011-06-30 | 2016-12-27 | Sony Corporation | Multiple input multiple output (MIMO) antennas having polarization and angle diversity and related wireless communications devices |
| CN103326122A (en) * | 2012-03-23 | 2013-09-25 | 泰科电子(上海)有限公司 | Antenna assembly, electronic device comprising antenna assembly and method for adjusting antenna performance |
| CN202855894U (en) * | 2012-09-18 | 2013-04-03 | 桂林电子科技大学 | High isolation double unit MIMO array antenna |
| CN106169653B (en) * | 2016-08-22 | 2021-05-14 | 南京信息工程大学 | Hand-held terminal 8 antenna MIMO system |
| CN106602243B (en) * | 2016-12-02 | 2019-10-25 | 西安电子科技大学 | 2MIMO antenna for mobile phone and its design method based on the feature theory of modules |
| CN108649330A (en) * | 2018-03-21 | 2018-10-12 | 杭州电子科技大学 | A kind of eight unit mimo antennas suitable for 5G mobile terminals |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004064196A1 (en) * | 2003-01-15 | 2004-07-29 | Fdk Corporation | Antenna |
| CN102394348A (en) * | 2011-07-08 | 2012-03-28 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency-range cell phone MIMO (Multiple Input Multiple Output) antenna structure applicable to LTE (Long Term Evolution) standard |
| CN102983397A (en) * | 2012-11-30 | 2013-03-20 | 华南理工大学 | Small high-isolation double-notch UWB MIMO antenna |
| CN104112911A (en) * | 2013-04-18 | 2014-10-22 | 财团法人工业技术研究院 | Multi-antenna system |
| CN104022353A (en) * | 2014-06-12 | 2014-09-03 | 电子科技大学 | Multi-band MIMO antenna used for intelligent machine |
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